Rocks
A natural, nonliving thing (substance) that makes up rocks. This is the building blocks of rocks.
mineral
nonliving plant or animal matter that fertilizes the soil.
humus
A type of fossils that is a hollow (empty) form with a certain shape
mold
nonrenewable resource
the spaces between particles of soil.
pore spaces
(Pore spaces in soil work like filters. They remove certain substances from the water)
a characteristic that describes something.
property
5 things that can be found in soil.
water, air, living things, humus, small rocks, minerals
Things that build up inside a mold that forms a cast.
minerals
3 ways people get fresh water.
1. reservoir
2. wells
3. water treatment plants
4. irrigation (using pipes or ditches)
Two properties of soil
color and texture (the size of the particles of soil)
4 properties of rocks.
hardness, color, luster, streak
bacteria, fungi
Insects and spiders sometimes trapped in sticky tree sap which hardens into hard, smooth material.
amber
the living and nonliving things that make up an area
environment
Three ways to conserve resources (3Rs)
reduce, reuse, recycle
igneous rocks
Soil forms in layers.
What is it called?
fossil that is a mark made by pressing.
imprint
Explain what can happen when you burn fossil fuels.
1. acid rain
2. smog
The process in which rocks continuously change from one type to another
the rock cycle
two factors make metamorphic rocks
extreme heat and pressure
which layer of soil is rich in humus and minerals.
A horizon or Topsoil
3 examples of fossil fuels
natural gas, oil, coal,
What can pollute both water and land?
1. littering
2. pesticides and fertilizers being washed into the nearby stream, lake or river.
3. chemicals
4. acid rain
The layers in sedimentary rocks show the age of one thing compared to another. The older layer is found on the lower part of the crust.
Relative age